My Computer

So since i couldn't talk you into getting on X fire i have a few questions Omni.

:O

So for my new computer i'll be getting 6 GB of RAM, a 4850 Radeon Graphics Card, and an Intel i7 Processor. Now my question is, I can either get the 2.66 GHZ, or I can get the 2.93 GHZ for another $380. I'm not sure which one i should get, and what the difference would be. Please help. ><